LV
LLMversus

Gemini 2.5 Flash vs GPT-4 1.5-nano: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Gemini 2.5 Flash and GPT-4 1.5-nano across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGemini 2.5 FlashGPT-4 1.5-nano
ProviderGoogleOpenAI
Input Price / 1M tokens$0.150$0.075
Output Price / 1M tokens$0.600$0.300
Context Window
1M
128K
Max Output Tokens
8,192
4,096
Arena ELO
1,270
1,150
Coding ELO
1,260
1,160
TTFT (ms)
150
120
Tokens/sec
100
150
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
When to Use Gemini 2.5 Flash

Gemini 2.5 Flash excels at multimodal, general-purpose, coding tasks.

Strengths:

  • Latest Gemini model
  • Improved reasoning
  • Strong multimodal

Best for:

multimodalgeneral-purposecoding
When to Use GPT-4 1.5-nano

GPT-4 1.5-nano excels at cost-effective, fast-inference tasks.

Strengths:

  • Super cheap
  • Very fast
  • Large context

Best for:

cost-effectivefast-inference

Related Comparisons

Claude Opus 4 vs Gemini 2.5 FlashClaude Opus 4 vs GPT-4 1.5-nanoGemini 2.5 Flash vs Gemini 2 5 ProGemini 2 5 Pro vs GPT-4 1.5-nanoGemini 2.5 Flash vs O3GPT-4 1.5-nano vs O3Deepseek R1 vs Gemini 2.5 FlashDeepseek R1 vs GPT-4 1.5-nanoGemini 2.5 Flash vs O1GPT-4 1.5-nano vs O1Gemini 2.5 Flash vs Qwen 3 235bGPT-4 1.5-nano vs Qwen 3 235bGemini 2.5 Flash vs Gemini Exp 1206Gemini Exp 1206 vs GPT-4 1.5-nanoGemini 2.5 Flash vs Gpt 4 5GPT-4 1.5-nano vs Gpt 4 5Gemini 2.5 Flash vs Groq Deepseek R1GPT-4 1.5-nano vs Groq Deepseek R1Gemini 2.5 Flash vs Llama 4 MaverickGPT-4 1.5-nano vs Llama 4 Maverick